This study is a contribution to the characterization of poultry farming systems in rural areas in Côte d’Ivoire, particularly in the commune of Korhogo, northern region of the country. To contribute to improving poultry productivity, a descriptive survey was carried out on the breeding sites. It took into account 80 poultry farming sites. The breeders were interviewed using a questionnaire. The results showed that the poultry farmers met raise poultry in chicken coops (100%) built in cement, including in a semi-intensive system. Poultry farmers were mainly men (94%) compared to 6% women. The actors were dominated by Sénoufo (65%) from the region and Malinké (16%), Peulh (8%) and others (11%). Adults (84%), most of them illiterate (65%), took up the activity without any training in poultry farming. Their main source of motivation for breeding was economic gain (85%). The farms had feeders, waterers and nesting boxes for laying hens. They brought feed supplements to their subjects and drinking water. 98% of deaths are caused by avian diseases and those despite medical and health prophylaxis measures.The intervention of veterinarians and supervisory agents on the sites visited was estimated at 29% and 20% respectively. Thus, the lifting of constraints linked to this sector could contribute to the improvement of poultry productivity in the Korhogo zone and in Côte d’Ivoire in general.

The aim of this study is to determine the share of coccidiosis in the mortality of young guinea fowl (keets) on farms in northern Côte d’Ivoire. Thus, a study was carried out on 192 one-day-old guinea fowl, divided into two (2) batches. The control batch did not receive treatment. The experimental batch was treated with an anticoccidial. Then, the zootechnical parameters and the degree of infestation were measured in each of the batches. The control batch recorded EPG values ​​of 600; 7371.43 and 5442.86 respectively for age groups 0-21d; 22-48d and 49-90d. these values ​​are significantly and respectively 8.6 times; 81.7 times and 63.19 times higher (p < 0.001) than those of the experimental group for the same age groups. As for mortality, it is 75% in the Control batch, three times higher than that of the experimental batch. Also, keets subjected to anticoccidial treatment recorded the best growth performance. Coccidiosis is therefore one of the main causes of the high mortality observed in guinea fowl farms in northern Côte d’Ivoire. Thus, the prevention of coccidiosis could help improve the profitability of guinea fowl farms in Côte d’Ivoire. However, the use of biological solutions as an alternative to synthetic antibiotics would be an avenue to explore in order to prevent the solution to this problem from being the start of another problem, in particular that of the resistance of germs to antibiotics.

Sarotherodon melanotheron (Rüppell, 1852, Cichlidae) is a species exploited by the local populations of the Ebrié lagoon. Morphometric measurements of all specimens of S. melanotheron caught in the heavily anthropized Biétry bay were used to study their growth. In S. melanotheron, the values ​​of Lt and W fluctuated by 140 and 185.06 mm and 58 and 119 g, respectively. The allometry coefficient b was significantly different from 3 for the seize-weight relationship and from 1 for the seize-seize relationships. The allometry coefficient b was significantly different from 3 for the seize-weight relationship and from 1 for the seize-seize relationships. Therefore, growth was negative allometric for this species living on the coast and off the bay. Environmental factors linked to the pollution of the Bay of Biétry have influenced the growth of this fish species.

The growing problem of antibiotic resistance calls into question practices related to the use of antibiotics. Their large-scale use to accelerate the rapid growth of food animals is of increasing concern to researchers. Currently, several studies are being carried out to find biological solutions as an alternative to the use of antibiotics in poultry farm. It is within this framework that the present study falls, the objective of which is to evaluate the effectiveness of an organic product, ALPHA-BIO+, on the production parameters of Lohmann Brown laying hens. Thus, two batches (control and experimental) subdivided into triplicate were formed from a sample of 458 animals. Thus, a classic breeding protocol with the use of antibiotics was applied in the control batches. As for the experimental batches, they received the food additive ALPHA-BIO+. The technical data obtained were subjected to statistical analyzes in order to assess the effectiveness of ALPHA-BIO+ on the animals zootechnical parameters. Indeed, in terms of ingested food, the values ​​obtained varied from 97.7 to 120.87 g for the control batch and from 94.12 to 114.95 g for the experimental batch. Regarding the laying rate, the two batches reached peak laying between the 30th and 32nd weeks of age with 95.24% for the control batch and 98.54% for the experimental batch. However, the conversion indices did not show a significant difference between the two batches. According to the results, the food additive ALPHA-BIO+ could help reduce the use of antibiotics in poultry farms.